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220 lines
7.9 KiB
EmacsLisp
220 lines
7.9 KiB
EmacsLisp
;;; rxvt.el --- define function key sequences and standard colors for rxvt -*- lexical-binding: t -*-
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;; Copyright (C) 2002-2022 Free Software Foundation, Inc.
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;; Author: Eli Zaretskii
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;; Keywords: terminals
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;; Code:
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(require 'term/xterm)
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(defgroup rxvt nil
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"(U)RXVT support."
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:version "28.1"
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:group 'terminals)
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(defcustom rxvt-set-window-title nil
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"Whether Emacs should set window titles to an Emacs frame in RXVT."
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:version "28.1"
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:type 'boolean)
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(defvar rxvt-function-map
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(let ((map (make-sparse-keymap)))
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(set-keymap-parent map xterm-rxvt-function-map)
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;; Set up input-decode-map entries that termcap and terminfo don't know.
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(define-key map "\e[7~" [home])
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(define-key map "\e[8~" [end])
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;; The strings emitted by f11 and f12 are the same as the strings
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;; emitted by S-f1 and S-f2, so don't define f11 and f12.
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;; (define-key rxvt-function-map "\e[23~" [f11])
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;; (define-key rxvt-function-map "\e[24~" [f12])
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(define-key map "\e[23~" [S-f1])
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(define-key map "\e[24~" [S-f2])
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(define-key map "\e[11^" [C-f1])
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(define-key map "\e[12^" [C-f2])
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(define-key map "\e[13^" [C-f3])
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(define-key map "\e[14^" [C-f4])
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(define-key map "\e[15^" [C-f5])
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(define-key map "\e[17^" [C-f6])
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(define-key map "\e[18^" [C-f7])
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(define-key map "\e[19^" [C-f8])
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(define-key map "\e[20^" [C-f9])
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(define-key map "\e[21^" [C-f10])
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(define-key map "\e[25~" [S-f3])
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(define-key map "\e[26~" [S-f4])
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(define-key map "\e[28~" [S-f5])
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(define-key map "\e[29~" [S-f6])
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(define-key map "\e[31~" [S-f7])
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(define-key map "\e[32~" [S-f8])
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(define-key map "\e[33~" [S-f9])
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(define-key map "\e[34~" [S-f10])
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(define-key map "\e[23^" [C-S-f1])
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(define-key map "\e[24^" [C-S-f2])
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(define-key map "\e[25^" [C-S-f3])
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(define-key map "\e[26^" [C-S-f4])
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(define-key map "\e[28^" [C-S-f5])
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(define-key map "\e[29^" [C-S-f6])
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(define-key map "\e[31^" [C-S-f7])
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(define-key map "\e[32^" [C-S-f8])
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(define-key map "\e[33^" [C-S-f9])
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(define-key map "\e[34^" [C-S-f10])
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(define-key map "\e[2^" [C-insert])
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(define-key map "\e[3^" [C-delete])
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(define-key map "\e[5^" [C-prior])
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(define-key map "\e[6^" [C-next])
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(define-key map "\e[7^" [C-home])
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(define-key map "\e[8^" [C-end])
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(define-key map "\eOd" [C-left])
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(define-key map "\eOc" [C-right])
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(define-key map "\eOa" [C-up])
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(define-key map "\eOb" [C-down])
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(define-key map "\e[3$" [S-delete])
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(define-key map "\e[5$" [S-prior])
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(define-key map "\e[6$" [S-next])
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(define-key map "\e[7$" [S-home])
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(define-key map "\e[8$" [S-end])
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(define-key map "\e[d" [S-left])
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(define-key map "\e[c" [S-right])
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(define-key map "\e[a" [S-up])
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(define-key map "\e[b" [S-down])
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map)
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"Function key overrides for rxvt.")
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(defvar rxvt-alternatives-map
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(let ((map (make-sparse-keymap)))
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;; The terminal initialization C code file might have initialized
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;; function keys F11->F42 from the termcap/terminfo information. On
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;; a PC-style keyboard these keys correspond to
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;; MODIFIER-FUNCTION_KEY, where modifier is S-, C-, C-S-. The
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;; code here substitutes the corresponding definitions in
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;; function-key-map. This substitution is needed because if a key
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;; definition if found in function-key-map, there are no further
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;; lookups in other keymaps.
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(define-key map [f11] [S-f1])
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(define-key map [f12] [S-f2])
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(define-key map [f13] [S-f3])
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(define-key map [f14] [S-f4])
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(define-key map [f15] [S-f5])
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(define-key map [f16] [S-f6])
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(define-key map [f17] [S-f7])
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(define-key map [f18] [S-f8])
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(define-key map [f19] [S-f9])
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(define-key map [f20] [S-f10])
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(define-key map [f23] [C-f1])
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(define-key map [f24] [C-f2])
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(define-key map [f25] [C-f3])
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(define-key map [f26] [C-f4])
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(define-key map [f27] [C-f5])
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(define-key map [f28] [C-f6])
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(define-key map [f29] [C-f7])
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(define-key map [f30] [C-f8])
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(define-key map [f31] [C-f9])
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(define-key map [f32] [C-f10])
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(define-key map [f33] [C-S-f1])
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(define-key map [f34] [C-S-f2])
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(define-key map [f35] [C-S-f3])
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(define-key map [f36] [C-S-f4])
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(define-key map [f37] [C-S-f5])
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(define-key map [f38] [C-S-f6])
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(define-key map [f39] [C-S-f7])
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(define-key map [f40] [C-S-f8])
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(define-key map [f41] [C-S-f9])
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(define-key map [f42] [C-S-f10])
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map)
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"Keymap of possible alternative meanings for some keys.")
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;; Set up colors, for those versions of rxvt that support it.
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(defvar rxvt-standard-colors
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;; The names of the colors in the comments taken from the rxvt.1 man
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;; page; the corresponding RGB values--from rgb.txt.
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'(("black" 0 ( 0 0 0)) ; black
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("red" 1 (205 0 0)) ; red3
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("green" 2 ( 0 205 0)) ; green3
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("yellow" 3 (205 205 0)) ; yellow3
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("blue" 4 ( 0 0 205)) ; blue3
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("magenta" 5 (205 0 205)) ; magenta3
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("cyan" 6 ( 0 205 205)) ; cyan3
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("white" 7 (229 229 229)) ; gray90
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("brightblack" 8 ( 77 77 77)) ; gray30
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("brightred" 9 (255 0 0)) ; red
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("brightgreen" 10 ( 0 255 0)) ; green
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("brightyellow" 11 (255 255 0)) ; yellow
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("brightblue" 12 ( 0 0 255)) ; blue
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("brightmagenta" 13 (255 0 255)) ; magenta
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("brightcyan" 14 ( 0 255 255)) ; cyan
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("brightwhite" 15 (255 255 255))) ; white
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"Names of 16 standard rxvt colors, their numbers, and RGB values.")
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(defun terminal-init-rxvt ()
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"Terminal initialization function for rxvt."
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(xterm--push-map rxvt-alternatives-map local-function-key-map)
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(xterm--push-map rxvt-function-map input-decode-map)
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;; Initialize colors and background mode.
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(xterm-register-default-colors rxvt-standard-colors)
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(rxvt-set-background-mode)
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;; This recomputes all the default faces given the colors we've just set up.
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(tty-set-up-initial-frame-faces)
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;; Unconditionally enable bracketed paste mode: terminals that don't
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;; support it just ignore the sequence.
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(xterm--init-bracketed-paste-mode)
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(when rxvt-set-window-title
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(xterm--init-frame-title))
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(run-hooks 'terminal-init-rxvt-hook))
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;; rxvt puts the default colors into an environment variable
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;; COLORFGBG. We use this to set the background mode in a more
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;; intelligent way than the default guesswork in startup.el.
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(defun rxvt-set-background-mode ()
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"Set background mode as appropriate for the default rxvt colors."
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(let ((fgbg (getenv "COLORFGBG"))
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bg rgb)
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(set-terminal-parameter nil 'background-mode 'light)
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(when (and fgbg
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(string-match ".*;\\([0-9][0-9]?\\)\\'" fgbg))
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(setq bg (string-to-number (substring fgbg (match-beginning 1))))
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;; The next line assumes that rxvt-standard-colors are ordered
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;; by the color index in the ascending order!
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(setq rgb (car (cddr (nth bg rxvt-standard-colors))))
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;; See the commentary in frame-set-background-mode about the
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;; computation below.
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(if (< (apply '+ rgb)
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;; The following line assumes that white is the 15th
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;; color in rxvt-standard-colors.
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(* (apply '+ (car (cddr (nth 15 rxvt-standard-colors)))) 0.6))
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(set-terminal-parameter nil 'background-mode 'dark)))))
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(provide 'term/rxvt)
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;;; rxvt.el ends here
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